Please download the dossier by clicking on the dossier button x
×

High efficiency passive piezo energy harvesting apparatus

  • US 20040135554A1
  • Filed: 01/09/2003
  • Published: 07/15/2004
  • Est. Priority Date: 01/09/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method for passively discharging energy stored in a piezoelectric device, and for storing said energy in said piezoelectric device, comprising:

  • disposing at least one inductor and an energy storage element in a circuit including said piezoelectric device;

    orienting a plurality of diodes in said circuit biasable to form a plurality of discharge flow paths within said circuit to discharge said energy from said piezoelectric device;

    forward biasing select ones of said diodes in said circuit;

    discharging said energy from said piezoelectric device in one of said flow paths formed by said selected ones of said forward biased diodes, through said inductor and said energy storage element; and

    storing said energy in each of said inductor and said energy storage element.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×